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<div id="layout">
  <div id="layout-content"><div id="dio.constants" class="appendix">
 <h1>预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
 <dl>
  
   <dt id="constant.f-dupfd">
    <strong><code>F_DUPFD</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-getfd">
    <strong><code>F_GETFD</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-getfl">
    <strong><code>F_GETFL</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-getlk">
    <strong><code>F_GETLK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-getown">
    <strong><code>F_GETOWN</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-rdlck">
    <strong><code>F_RDLCK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-setfl">
    <strong><code>F_SETFL</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-setlk">
    <strong><code>F_SETLK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-setlkw">
    <strong><code>F_SETLKW</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-setown">
    <strong><code>F_SETOWN</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-unlck">
    <strong><code>F_UNLCK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.f-wrlck">
    <strong><code>F_WRLCK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-append">
    <strong><code>O_APPEND</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-async">
    <strong><code>O_ASYNC</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-creat">
    <strong><code>O_CREAT</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-excl">
    <strong><code>O_EXCL</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-ndelay">
    <strong><code>O_NDELAY</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-noctty">
    <strong><code>O_NOCTTY</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-nonblock">
    <strong><code>O_NONBLOCK</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-rdonly">
    <strong><code>O_RDONLY</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-rdwr">
    <strong><code>O_RDWR</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-sync">
    <strong><code>O_SYNC</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-trunc">
    <strong><code>O_TRUNC</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.o-wronly">
    <strong><code>O_WRONLY</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-irgrp">
    <strong><code>S_IRGRP</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-iroth">
    <strong><code>S_IROTH</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-irusr">
    <strong><code>S_IRUSR</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-irwxg">
    <strong><code>S_IRWXG</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-irwxo">
    <strong><code>S_IRWXO</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-irwxu">
    <strong><code>S_IRWXU</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-iwgrp">
    <strong><code>S_IWGRP</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-iwoth">
    <strong><code>S_IWOTH</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-iwusr">
    <strong><code>S_IWUSR</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-ixgrp">
    <strong><code>S_IXGRP</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-ixoth">
    <strong><code>S_IXOTH</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
  
   <dt id="constant.s-ixusr">
    <strong><code>S_IXUSR</code></strong>
    (<span class="type">int</span>)
   </dt>

   <dd>

    <p class="para"/>
   </dd>

  
 </dl>

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